Did U.S. intelligence officers downplay IS reports?

Aired: 9/16/2015 | 0:09:00 | Clip
A number of intelligence officers say that senior officials have been painting an overly optimistic picture of the fight against the Islamic State group. A Pentagon investigation is now underway, and the issue was the subject of a Capitol Hill hearing. Jeffrey Brown talks to Mark Mazzetti of The New York Times and retired Col. Derek Harvey, a former Army intelligence officer.